NL154643B - RECEIVER FOR SIGNALS TRANSFERRED ACCORDING TO A TONE FREQUENCY CODE, ESPECIALLY FOR TELEPHONE CENTRALS WITH TONE FREQUENCY KEY SELECTOR. - Google Patents

RECEIVER FOR SIGNALS TRANSFERRED ACCORDING TO A TONE FREQUENCY CODE, ESPECIALLY FOR TELEPHONE CENTRALS WITH TONE FREQUENCY KEY SELECTOR.

Info

Publication number
NL154643B
NL154643B NL6613507A NL6613507A NL154643B NL 154643 B NL154643 B NL 154643B NL 6613507 A NL6613507 A NL 6613507A NL 6613507 A NL6613507 A NL 6613507A NL 154643 B NL154643 B NL 154643B
Authority
NL
Netherlands
Prior art keywords
tone frequency
receiver
transferred according
signals transferred
key selector
Prior art date
Application number
NL6613507A
Other languages
Dutch (nl)
Other versions
NL6613507A (en
Original Assignee
Siemens Ag Albis
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Ag Albis filed Critical Siemens Ag Albis
Publication of NL6613507A publication Critical patent/NL6613507A/xx
Publication of NL154643B publication Critical patent/NL154643B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
    • H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephonic Communication Services (AREA)
NL6613507A 1965-10-28 1966-09-23 RECEIVER FOR SIGNALS TRANSFERRED ACCORDING TO A TONE FREQUENCY CODE, ESPECIALLY FOR TELEPHONE CENTRALS WITH TONE FREQUENCY KEY SELECTOR. NL154643B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1490665A CH429844A (en) 1965-10-28 1965-10-28 Receiving system for signals transmitted according to a tone frequency code

Publications (2)

Publication Number Publication Date
NL6613507A NL6613507A (en) 1967-05-02
NL154643B true NL154643B (en) 1977-09-15

Family

ID=4404729

Family Applications (1)

Application Number Title Priority Date Filing Date
NL6613507A NL154643B (en) 1965-10-28 1966-09-23 RECEIVER FOR SIGNALS TRANSFERRED ACCORDING TO A TONE FREQUENCY CODE, ESPECIALLY FOR TELEPHONE CENTRALS WITH TONE FREQUENCY KEY SELECTOR.

Country Status (3)

Country Link
CH (1) CH429844A (en)
DE (1) DE1277368C2 (en)
NL (1) NL154643B (en)

Also Published As

Publication number Publication date
CH429844A (en) 1967-02-15
NL6613507A (en) 1967-05-02
DE1277368B (en) 1968-09-12
DE1277368C2 (en) 1975-04-17

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee
NL80 Abbreviated name of patent owner mentioned of already nullified patent

Owner name: SIEMENS ALBIS